That would be cool.
Maybe an additional set of service packs catering towards the post-EOS (POSReady 2009) would be a nice plan at this point - rather than integrating them into an ISO - once the list is compiled, y'know... and particularly a 'revised' SP4 for those who really don't want to be installing .NET/IE8/WMP11 within a Service Pack, as that's not how M$ distributed the original SPs either, which is my main gripe about using that package... I'd rather install them after all OS-level security updates and to be fair it's more or less up to the user's jurisdiction too, so yeah.
They'd need to, as we basically just suggested in this thread, be split into separate packs depending on processor architecture, merely to save people downloading more than what they need unless some sort of 'check' can be implemented, but then again bandwidth saving is bandwidth saving on the user's end. we shouldn't treat everyone like a social media guzzling Chrome user